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Based on this link that Roland Dalmulder sent me to: https://github.com/joomla/joomla-cms/blob/5fdba4e5ee022517a05ae893d8f7077eaf864bf7/libraries/src/Updater/Adapter/ExtensionAdapter.php#L113 preg_match('/^' . $this->currentUpdate->targetplatform['VERSION'] . '/', JVERSION) There is no implementation of preg_quote(), so the dots (any character / ...


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